PEP Request: Advanced Data Structures
Terry Reedy
tjreedy at udel.edu
Sat Jul 16 20:10:47 EDT 2016
On 7/16/2016 6:14 PM, shrey.desai at gmail.com wrote:
> I have found it slightly frustrating that Python does not have
> built-in support for advanced data structures (Linked Lists,
You and I have different ideas of 'advanced data structures' ;-). To
me, linked list are limited structures used in functional programming to
make mutable structure from immutable-except-on-creation cells. In any
case, one can easily use tuples to create branching structures. Tuples
and lists containing tuples and lists are routine in python programming.
Wrapping such usage in a LinkedList class is optional -- and unusual.
> Stacks/Queues,
Nearly two decades ago, I promoted the addition of the list.pop method
as the inverse of list.append, in order to make lists easily usable as
stacks. This is routine in python code today.
collections.deque instances are advanced data structures that can be
used as stacks, queues, or both, at either end. The class has tests
that I presume are rigorous.
> BST)
British Summer Time? (Suggestion from Google)
> Currently, we are required to write our own modules that represent
> these data structures and rigorously test/refactor them before we can
> actually use them.
If an instructor makes you wrap the structures that Python provides
before you can use then, that is between you and the instructor, and not
our doing. The instructor could let you use Python as it is or hand you
the wrapping he likes.
--
Terry Jan Reedy
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